Here are some examples of Oracle alter table syntax to modify data columns and note that you can add constraints like NOT NULL: ALTER TABLE customer MODIFY (cust_name varchar2(100) not null, cust_hair_color varchar2(20)) ;
Did Sir Isaac Newton write any books? His best known book is Principia (Philosophiae Naturalis Principia Mathematica) published in 1687; which includes his laws of motion. Edit
He did many calculations and discovered gravity. Sir Isaac NewtonSIR Isaac Newton was famous for being the first person to lay down the laws on gravity and force. He is the person who was said to be sitting under an apple tree and an apple fell on his head. He also figured out why a rainbow is made.saac Newton was well known the three laws of motion. He was also know for the math genius he was. sir Isaac Newton was famous for many things, but his moat famous were the 3 laws of motion, explaining gravity, and the light spectrum. He discovered gravity.